Megaphone attachment for passenger-cars.



No. 754,918. PATENTED MAR. 15, 1904. W. H. BRUNT.

MEGAPHONE ATTACHMENT FOR PASSENGER CARS.

APPLIOATION FILED JUNE 10. 1903.

Fig.1.

N0 MODEL.

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No. 754,918. Patented March 15, 1904.

UNITED STATES PATENT OFFICE.

IVILLIAM HAMILTON BRUNT, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO DANIEL J. CABLE, OF PITTSBURG, PENNSYLVANIA.

MEGAPHONE ATTACHMENT FOR PASSENGER-CARS.

SPECIFICATION forming part of Letters Patent No. 754,918, dated. March 15, 1904.

Application filed June 10, 1908. Serial No. 160,952. (No model.)

TO who??? it W/ 6077106777! my invention is arranged as shown in Figs. 2

Be it known that I, WILLIAM HAMILTON and 3, by reference to which it will be noticed 5 BRUNT, residing at Pittsburg, in the county of both tubes A and B have their inner or adja- Allegheny and State of Pennsylvania, have incent ends connected with a central or single vented a new and Improved Megaphone Atsound-distributing section C, which comprises tachment for Passenger-Cars, of which the two short tube portions e V, with which the following is a specification. tubes A and B connect. The portions a b My invention seeks to provide a simple, communicate and-form a short single pendent economical, and easily manipulated attachtube 0 to which the single distributing horn 1o -ment for street and railway cars, whereby the or funnel c is attached. At the point where conductor and motorman can readily converse the two tubes a V of the member C join are with each other without distributing the sound located two valves, one of which, D, is autoin the car or the conductor or motorman can matically held, through the medium of a suitconvenientlycall out points of interest,streets, able spring, to close off the funnel c and the 15 and other designations from the front or rear other, E, is automatically held up to an inopplatform without conveying or. distributing erative position that is, in such position as the sound over the opposite ends of the carto not interfere with the sound-passage 5 platform. through the tubes A into the tube or pipe B,

WVith other objects in view, all of which the said valves 1) and E having such auto- 20 will be hereinafter apparent, my invention matic adjustments and are so designed that consists in certain combination of parts, all of under ordinary conditions the conductor and which will be specifically pointed out in the motorman can readily talk with each other 7 appended claims, reference being had to thewithout distributing the sound without the accompanying drawings, in which car, it being obvious that under many condi- 2 5 Figure 1 illustrates a street-car equipped tions it is desirable that the conductor and with my invention and illustrating the simmotorman communicate with each other withplest form of the same. Fig. 2 is a longituout making known to the passengers the subdinal section of the upper part of a car with ject of their conversation. the preferred form of my invention applied. The valve D is hinged over the throat or 3 Fig. 3 is a longitudinal section of the soundoutlet (Z, which is in communication with the distributing portion and the valve members tubes A and B, and at its pivot it has a short joined therewith. Fig. 4: is a detail view of pintle d, that projects outside the funnel C to one of the Valve-actuating spring devices. receive a short crank member d with which In the simplest form of my invention, as connects a cord or other flexible member F,

35 shown in Fig. 1, the same consists of two that passes over suitably-arranged guide-pultubes A B, of sheet metal or other desired leys f and extends down within convenient material, one of which, B, extends over the reach of the conductor, and to the said valve- 8 5 front end or platform of the car, as at b, and crank member (Z is also connected a second terminates in a mouthpiece b, convenient for cord F, that passes over suitable guide-pul- 4 the motorman to use without leaving his rcguleys f forwardly to within convenient reach lar post, and the tubeA extends laterally over of the motorman.

the end or platform, as at a, and has a mouth- The valve E is also provided with a short 9 piece a for the conductor. stud or pintle e at its pivot end, with which Both tubes A and B in the arrangement connect the cords or cables G G, that pass 45 shown in Fig. 1 extend into the car to a point over guide-pulleys g g and respectively excentral thereof, and each terminates in a funtend within convenient reach of the conductor nel or sound-distributer 6 (0 as shown. and the motorman.

' In its more complete and preferred form From the foregoing description, taken in connection with the accompanying drawings, it is believed the advantages of my invention will be readily apparent.

It will be noticed that when the parts are in their normal position (shown in Fig. 3) the tubes A and B will be free to permit the cond uctor and motorman talking freely with each other without throwing the sound into the car.

Should the conductor desire to communicate with the passengers, he pulls on the cord G suflicient to thrust the valve E over into the position shown by the dotted lines X in Fig. 3, and thereby cuts off the tube B to the motorman and at the same time leaves a free passage for the discharge of the sound through the funnel into the car. The same conditions occur to permit the motorman communicating with the passengers, which he does by pulling on the cord G sufliciently to throw the valve E across the tube A only, as indicated by the dotted line y in Fig. 3, it being understood that in either case the motorman or conductor also manipulates the valveD to throw it to the open position, (indicated by the dotted line indicated by Z.)

Slight changes in the detailed arrangement of the valves and the manner of providing the central distributing member C for the two tubes A and B may be readily made without departing from the scope of the appended claims.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. A megaphone attachment for cars, comprising a pair of oppositelydisposed tubes, one of which has its entrant end projected beyond the rear end, and the other has its entrant end projected beyond the front end of the car, a sound-distributer joined with the adjacent ends of the tube, a funnel joined to the said sound-distributer, means mounted within said funnel and operable from either end of the car for closing the opening communicating between the soLind-distributer and the funnel for the purposes specified.

2. A megaphone attachment for cars, comprising a pair of oppositely-disposcd tubes, one of which has its entrant end projected beyond the rear end, and the other has its entrant end projected beyond the front end of the car, a sound-distributer joined with the adjacent ends of the tubes, a funnel joined to the said distributer, means mounted within said funnel and operable from either end of the car for closing the openingcommunicating between the sound-distributer and the funnel, said means including a flap-valve mounted to swing within said funnel for the purposes specified.

3. The combination in a megaphone attachment as described, with the tubes A and B and the sound-distribLiter C detachably connected with the inner ends of the said tubes A and B, said distributer including a pendent portion 0 of a valve device mounted in the said portion 0 automatically adjustable to close said pendent portion 0 whereby to provide an uninterrupted sound-tube between the front and rear platforms, a second valve located in the said distributer normally held to its open position, and means operable from either end of the car for shifting the said second valve to close off either of the tubesA and B, and a separate means operable from either end of the car for opening the valve devices within the portion 0 of the distributer, all being arranged substantially as shown and for the purposes described.

4. The combination in a megaphone as described, with the tubes A and B having mouthpieces adapted to project beyond the car ends; of a sound-distributer C detachabl y connected with the inner ends of the tubes A and B, said distributer including an open portion a, of a valve device mounted in said portion 0", to cut oil either of the tubes A and B, said valve having a crank mounted outside of the distributer C, cord connections between said crank and either end of the car, whereby said valve can be operated from either end of the car, and a 

